Coil panel assembly and electromagnetic heating device

Abstract

The utility model discloses a coil panel assembly and an electromagnetic heating device, and relates to the technical field of electromagnetic heating, the coil panel assembly comprises a support and a plurality of winding groups, and a plurality of installation areas are formed on the support; the plurality of winding groups are arranged corresponding to the plurality of mounting areas, at least one winding group is arranged to be a first winding group, the first winding group comprises a plurality of winding units, the plurality of winding units are distributed along the peripheries of the mounting areas, and two adjacent winding units are arranged to be opposite in current direction; therefore, the two adjacent winding units form opposite magnetic poles. According to the technical scheme, the technical effect that the pot wall of the small pot can be heated in at least one installation area can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic heating, and particularly relates to a coil disc assembly and an electromagnetic heating device. Background Art

[0002] Existing full-region induction cookers are composed of multiple small coil discs inserted into empty spaces. When a cooking pot is placed on the coil discs, the cooking pot will cover several coil discs, and only the completely covered or partially covered coil discs will work, so as to achieve heating in the entire coil disc area and realize dragging the pot for heating at any position. However, the existing multi-group small coil disc full-region induction cookers have the following disadvantages. For example Figure 1 As shown, the magnetic pole directions of the small-sized combined coil discs are all set in the same direction, so that the magnetic fields of adjacent same magnetic poles repel each other, resulting in the distribution of the magnetic field in the vertical direction (i.e., the height direction) being compressed, and the height of the magnetic field will decrease due to this repulsive effect. Therefore, the existing small-sized combined coil discs still perform planar heating during heating and cannot achieve three-dimensional heating of the pot wall. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a coil disc assembly and an electromagnetic heating device, aiming to be able to perform three-dimensional heating on the wall of a small cooking pot.

[0004] To achieve the above purpose, a coil disc assembly proposed by the utility model includes:

[0005] A bracket, on which a plurality of installation areas are formed; and

[0006] A plurality of winding groups, corresponding to the plurality of installation areas, at least one of the winding groups is set as a first winding group, the first winding group includes a plurality of winding units, the plurality of winding units are distributed along the circumference of the installation area, and the current directions of two adjacent winding units are set to be opposite, so that the two adjacent winding units form opposite magnetic poles.

[0007] In one embodiment, the plurality of installation areas are arranged in a matrix; or

[0008] The plurality of installation areas are arranged along a circumference.

[0009] In one embodiment, the installation area is square; or

[0010] The installation area is circular.

[0011] In one embodiment, the plurality of installation areas are adjacent;

[0012] Among the two winding groups on two adjacent installation areas, at least some of the winding units are shared.

[0013] In one embodiment, the plurality of mounting areas form a combined mounting area;

[0014] In some of the winding units among the plurality of winding groups, they are distributed along the periphery of the combined mounting area to form a winding hybrid group. In the winding hybrid group, two adjacent winding units are set with opposite current directions so that the two adjacent winding units form opposite magnetic poles.

[0015] In one embodiment, the number of winding units in the winding hybrid group is an even number greater than or equal to 4.

[0016] In one embodiment, the number of winding units in the winding group is an even number greater than or equal to 4.

[0017] In one embodiment, the plurality of winding groups have a first side and a second side. The first side is used to correspond to the appliance to be heated;

[0018] The coil disk assembly further includes at least one magnet structure corresponding to at least one of the winding groups. The magnet structure is located on the second side of the winding group. The magnet structure includes a first magnet part, and the first magnet part includes:

[0019] Two magnetic end parts, which are arranged corresponding to the central regions of two adjacent winding units; and,

[0020] An intermediate part, extending from one magnetic end part to the other magnetic end part.

[0021] In one embodiment, the two magnetic end parts and the intermediate part are integrally provided.

[0022] In one embodiment, at least one of the magnetic end parts is provided with a magnetic convex part extending towards the first side of the winding unit.

[0023] In one embodiment, in the first winding group, at least one of the winding units is arranged in a ring shape, which has a first winding ring section close to the center of the mounting area and a second winding ring section close to the periphery of the mounting area. At least part of the width of the first winding ring section is d1, and at least part of the width of the second winding ring section is d2, and d1 is greater than d2.

[0024] In one embodiment, in the first winding group, at least one of the winding units is arranged in a ring shape, which has a first winding ring section close to the center of the mounting area and a second winding ring section close to the periphery of the mounting area. The winding center of the winding unit is located on the side close to the second winding ring section of its geometric center.

[0025] The present utility model also provides an electromagnetic heating device, including:

[0026] A panel, on which a plurality of heating zones are provided; and,

[0027] A coil disk assembly, and a plurality of the mounting zones are arranged corresponding to the plurality of heating zones;

[0028] Wherein, the plurality of heating zones include a side wall heating zone, and the winding group arranged corresponding to the side wall heating zone is set as a first winding group.

[0029] In the technical solution provided by the present utility model, the coil disk assembly includes a bracket and a plurality of winding groups, a plurality of mounting zones are formed on the bracket; a plurality of winding groups are arranged corresponding to the plurality of mounting zones, at least one of the winding groups is set as a first winding group, the first winding group includes a plurality of winding units, the plurality of winding units are distributed along the periphery of the mounting zone, and two adjacent winding units are set with opposite current directions, so that the two adjacent winding units form opposite magnetic poles.

[0030] The plurality of winding units of the first winding group are distributed along the periphery of the mounting zone, and two adjacent winding units are set with opposite current directions, so that the two adjacent winding units form opposite magnetic poles. In two adjacent winding units, the magnetic induction lines extend from the magnetic pole formed by one of the winding units to the magnetic pole formed by the other winding unit. Therefore, the magnetic induction lines coming out from one magnetic pole need to extend to a higher position on one side of the corresponding mounting zone and then can reach the other magnetic pole. Furthermore, a three-dimensional magnetic field can be generated to heat the pot wall of a small cookware located thereon. To solve the problem that the existing electromagnetic cooker cannot realize three-dimensional heating of the pot wall of a small cookware. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0032] Figure 1 It is a schematic diagram of the magnetic field distribution when the current directions of two winding units are the same in the prior art;

[0033] Figure 2 It is a schematic structural diagram of an embodiment of the coil disk assembly provided by the present utility model;

[0034] Figure 3 For Figure 2 The exploded structural diagram of the coil disk assembly in

[0035] Figure 4 For Figure 2Schematic diagram of magnetic field distribution with reverse current settings in two winding units;

[0036] Figure 5 For Figure 2 Schematic diagram of the magnet structure and the winding group structure in;

[0037] Figure 6 For Figure 2 Schematic diagram of the structure of an embodiment of the winding group in;

[0038] Figure 7 Schematic diagram of the structure of another embodiment of the winding group provided by the present utility model;

[0039] Figure 8 Schematic diagram of the structure of yet another embodiment of the winding group provided by the present utility model;

[0040] Figure 9 Schematic diagram of the structure of another implementation manner of the winding unit provided by the present utility model.

[0041] Explanation of reference numerals in the drawings:

[0042] 100. Coil disc assembly;

[0043] 1. Bracket; 11. Installation area;

[0044] 2. Winding group; 21. First winding group; 211. Winding unit; 2111. First winding loop segment; 2112. Second winding loop segment;

[0045] 3. Magnet structure; 31. First magnet part; 311. Magnetic end part; 312. Intermediate part; 313. Magnetic convex part; 32. Second magnet part.

[0046] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0048] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, then the directional indications will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0050] The existing full-area induction cooker is composed of multiple small coils inserted in the air. When the pot is placed on the coil, the pot will cover several coils, and only the coils covered or partially covered will work, so that the entire coil area can be heated and the pot can be heated at any position; however, the existing multi-group small coil full-area induction cooker has the following disadvantages, such as Figure 1 As shown, the magnetic poles of the small-sized combined coil disk are all arranged in the same direction, so that the adjacent magnetic fields with the same magnetic poles repel each other, resulting in the compression of the distribution of the magnetic field in the vertical direction (i.e., the height direction), and the height of the magnetic field will be reduced due to this repulsive effect. Therefore, the existing small-sized combined coil disk is still flat when heated, and it is impossible to achieve three-dimensional heating of the pot wall.

[0051] In order to solve this technical problem, the utility model proposes a coil disk assembly 100 to solve the problem that the existing electromagnetic cooker cannot achieve three-dimensional heating of the pot wall.

[0052] See also Figures 2 to 4 The utility model provides a coil disk assembly 100, which includes a bracket 1 and a plurality of winding groups 2. The bracket 1 is formed with a plurality of installation areas 11; the plurality of winding groups 2 are arranged corresponding to the plurality of installation areas 11, at least one of the winding groups 2 is arranged as a first winding group 21, the first winding group 21 includes a plurality of winding units 211, the plurality of winding units 211 are distributed along the periphery of the installation area 11, and two adjacent winding units 211 are arranged with opposite current directions so that the two adjacent winding units 211 form opposite magnetic poles.

[0053] The utility model is provided with a plurality of installation areas 11, and a plurality of winding groups 2 are provided corresponding to the plurality of installation areas 11. Thus, a plurality of small pots can be placed in the plurality of installation areas 11 respectively to allow the corresponding winding groups 2 to heat them. Alternatively, a small pot can be placed in different installation areas 11 to allow the corresponding winding groups 2 to heat them. Of course, a large pot can also be placed in a plurality of installation areas 11 to allow the plurality of winding groups 2 to heat them.

[0054] “At least one winding group 2 is set as the first winding group 21” may mean that only one winding group 2 is set as the first winding group 21, or multiple winding groups 2 are set as the first winding group 21, or all winding groups 2 are set as the first winding group 21. The specific setting depends on actual needs.

[0055] In two adjacent winding units 211, the magnetic flux lines extend from the magnetic pole formed by one of the winding units 211 to the magnetic pole formed by the other winding unit 211. Therefore, the magnetic flux lines from one magnetic pole need to extend to a higher position on the side of the corresponding installation area 11 before reaching the other magnetic pole, thereby generating a three-dimensional magnetic field to heat the pot wall of the small pot located thereon. This solves the problem that the existing induction cooker cannot achieve three-dimensional heating of the pot wall of the small pot.

[0056] It should be noted that the purpose of the zoned induction cooker in the prior art is to meet diverse cooking needs and to achieve independent control of different areas on the same cooker. Small-sized coils can better adapt to this multi-zone layout, so that each cooking area can work independently without interfering with each other. In principle, the smaller the size of the coil, the higher the accuracy of its regulation. In this way, pots of different sizes and types can be placed on different cooking areas as needed to cook multiple foods at the same time.

[0057] However, in a small-sized coil disk, the current flows in the wire to form a closed loop, thereby generating a magnetic field surrounding the coil. Since the coil is planar, the magnetic field is mainly concentrated on both sides of the coil, that is, in the direction perpendicular to the plane of the coil. The geometric shape of the small-sized coil disk (usually a flat circle or rectangle) further exacerbates the phenomenon of the magnetic field being concentrated on both sides. This flat geometry causes the magnetic field to be superimposed in a direction perpendicular to the plane of the coil, so that the magnetic field is mainly concentrated on the plane of the bottom of the pot, making it difficult to form an effective wrapping of the pot wall. If the intensity of the magnetic field is increased by increasing the current, on the one hand, the heating intensity of the bottom of the pot will increase, resulting in uneven heating. On the other hand, multiple currents in the same direction will further increase the superimposed magnetic field, thereby causing the radiation of the external environment to further increase.

[0058] It can be understood that in two adjacent winding units 211, the magnetic induction lines extend from the magnetic pole formed by one of the winding units 211 to the magnetic pole formed by the other winding unit 211. Therefore, the magnetic induction lines coming out of one magnetic pole need to extend to a higher position on one side of the corresponding installation area 11 before they can reach the other magnetic pole, and the magnetic fields will be superimposed and coupled in space. The coupled magnetic fields enhance each other in the direction perpendicular to the connection line of the magnetic poles (i.e., enhance the heating ability for the cookware), while they cancel each other out in the direction of the connection line of the magnetic poles. For the surrounding environment on its periphery, the operator or other objects are located on the periphery of the installation area 11, and this cancellation effect helps to reduce the radiation of the magnetic field to the environment, the operator or other objects in the horizontal direction of the installation area 11. At the same time, for the winding unit 211, reducing the radiation to the external environment means that more energy is effectively used to heat the cookware instead of being dissipated into the environment, thereby improving the overall energy efficiency.

[0059] It can be understood that the shapes of the winding units 211 in the "multiple winding units 211" mentioned in this application can be set to be the same or different. Each winding unit 211 is formed by winding multiple turns of coils. Each turn of the coil in each winding unit 211 can be regarded as an annular structure. Of course, the annular structure is not limited to being circular, it can be square or elliptical. Each winding unit 211 can be laid flat along a surface area, and the surface area can be a plane or a curved surface. Each winding unit 211 can also be bent, and specifically can be determined according to the actual situation, and the embodiments of this specification do not limit this.

[0060] It can be understood that the "opposite current directions" mentioned in this application refer to the current of the winding unit 211 flowing in the clockwise or counterclockwise direction, that is, when the current direction of one winding unit 211 is clockwise, the current direction of the other winding unit 211 is counterclockwise.

[0061] Please refer to Figures 6 to 8 , in one embodiment, the multiple installation areas 11 are arranged in a matrix; or the multiple installation areas 11 are arranged along a circumference.

[0062] It can be understood that the "matrix arrangement" mentioned in this application means arranging multiple installation areas 11 in the form of rows and columns, and the included angle between the rows and columns is not particularly limited, and a parallelogram setting is formed, so that the installation areas 11 can fully occupy the area of the bracket 1, thereby providing more heating areas and improving the working efficiency.

[0063] As used in this application, the term "circumferential arrangement" means that a plurality of mounting areas 11 are arranged in a circular or elliptical pattern around a central point. With this arrangement, the middle part of the bracket 1 can be hollowed out, allowing the cook located in the middle of the bracket 1 to simultaneously control the cookware on multiple mounting areas 11, thereby improving work efficiency.

[0064] In one embodiment, the mounting area 11 is square; or the mounting area 11 is circular.

[0065] It can be understood that the mounting area 11 can be rectangular, square, polygonal, circular, or elliptical, and can be selected according to the shape of the cookware above it, without specific limitation here. When there are multiple mounting areas 11, the multiple mounting areas 11 can be set the same or differently. With the same setting, all mounting areas 11 have the same heating capacity and characteristics, enabling the cookware to obtain the same heating effect when placed on any mounting area 11, improving the convenience of use. At the same time, since all mounting areas 11 use the same technology and components, maintenance and replacement of parts are simpler and more convenient; with different settings, the size and shape of the overall heating area can be adjusted according to the size and shape of different cookware, which can utilize energy more efficiently. At the same time, combinations of mounting areas 11 with different shapes can simultaneously accommodate multiple cookware to meet different cooking needs. In addition, it is worth mentioning that when the outer shell of the cookware is an irregular multi-sided curve or an irregular multi-variable arc, the area to be heated can be calculated by folding according to actual needs, so that the mounting area 11 can cover the cookware for heating.

[0066] In one embodiment, as Figure 8 shown, the multiple mounting areas 11 are arranged adjacent to each other; among the two winding groups 2 on two adjacent mounting areas 11, at least some of the winding units 211 are shared, as Figure 8 shown, where two shared winding groups 2 are marked with a dashed box.

[0067] It can be understood that the number of shared winding units 211 can be one or more, and the shared winding units 211 can be shared by at least two mounting areas 11, without specific limitation here. By using the shared winding units 211, the number of winding units 211 can be reduced, reducing material waste, because the shared winding units 211 can be reused by multiple mounting areas 11, thereby reducing material costs. The spatial layout between adjacent mounting areas 11 can be more compact, reducing the overall volume and occupied space, while improving the space utilization rate of the bracket 1.

[0068] In one embodiment, the multiple installation areas 11 form a combined installation area; among the multiple winding groups 2, some of the winding units 211 are distributed along the periphery of the combined installation area to form a winding hybrid group. In the winding hybrid group, two adjacent winding units 211 are set to have opposite current directions so that the two adjacent winding units 211 form opposite magnetic poles.

[0069] It can be understood that the multiple installation areas 11 form a combined installation area. Among the multiple winding groups 2, some of the winding units 211 are distributed along the periphery of the combined installation area to form a winding hybrid group. In the winding hybrid group, two adjacent winding units 211 are set to have opposite current directions so that the two adjacent winding units 211 form opposite magnetic poles. In this way, when a large cookware is placed on the combined installation area, the pot wall of the large cookware can be heated.

[0070] In one embodiment, the number of the winding units 211 in the winding hybrid group is an even number greater than or equal to 4.

[0071] It can be understood that with at least 4 even-numbered winding units 211, each winding unit 211 at the periphery of the combined installation area can have an opposite current direction to that of the adjacent winding unit 211. In this way, a three-dimensional magnetic field can be generated at the periphery of the formed combined installation area, and the pot wall of the cookware located thereon can be uniformly heated. With such a setting, the magnetic field is also cancelled at the periphery of the combined installation area, reducing the radiation to the outside.

[0072] In one embodiment, the number of the winding units 211 in the winding group 2 is an even number greater than or equal to 4.

[0073] It can be understood that with at least 4 even-numbered winding units, each winding unit 211 at the periphery of the installation area 11 can have an opposite current direction to that of the adjacent winding unit 211. In this way, a three-dimensional magnetic field can be generated at the periphery of the formed installation area 11, and the pot wall of the cookware located thereon can be uniformly heated. With such a setting, the magnetic field is also cancelled at the periphery of the installation area 11, reducing the radiation to the outside.

[0074] It is worth mentioning that when the current directions of any one of the winding units 211 in all the installation areas 11 are opposite to those of the adjacent winding units 211, and the current setting directions of the winding units 211 at the edges of all the installation areas 11 are opposite to those of the winding units 211 at the edges of the adjacent installation areas 11, a whole heating area can be formed. When heating a cookware in this area, even if it deviates from the corresponding installation area 11, the cookware can still be heated, and the heating effect can be kept consistent. Or, when heating the cookware, not only can the winding units 211 in the corresponding installation area 11 be turned on for heating, but also multiple winding units 211 adjacent to this installation area 11 can be turned on. In this way, a stronger three-dimensional magnetic field can be coupled with the winding units 211 at the periphery of this installation area 11, increasing the heating intensity of the cookware wall.

[0075] Please refer to Figure 2 、 Figure 3 and Figure 5 , in an embodiment, the multiple winding groups 2 have a first side and a second side, and the first side is used to correspond to the appliance to be heated; the coil disc assembly 100 further includes at least one magnet structure 3 corresponding to at least one of the winding groups 2, the magnet structure 3 is located on the second side of the winding group 2, and the magnet structure 3 includes a first magnet part 31, and the first magnet part 31 includes two magnetic end parts 311 and an intermediate part 312. The two magnetic end parts 311 are arranged corresponding to the central regions of two adjacent winding units 211; the intermediate part 312 extends from one magnetic end part 311 to the other magnetic end part 311.

[0076] It can be understood that the magnetic end parts 311 concentrate the magnetic field lines on the first side of the winding group 2. This magnetic field concentration effect helps to improve the coupling efficiency with the cookware, thus realizing more efficient energy transfer and heating. The magnetic end parts 311 are used to optimize the magnetic flux path. By reducing unnecessary magnetic resistance and magnetic leakage phenomena, the magnetic flux can pass through the magnet structure more smoothly, thereby enhancing the magnetic field intensity in the heating area, helping to reduce energy loss, improve heating efficiency, and ensure a more uniform magnetic field distribution in the heating area. The intermediate part 312 serves as a bridge connecting the two magnetic end parts 311, ensuring the continuity of the magnetic field. In the magnet structure, the magnetic field lines start from one magnetic end part 311 and finally reach the other magnetic end part 311. This continuity is beneficial to maintaining the stability of the magnetic field in the whole heating area.

[0077] In an embodiment, the two magnetic end parts 311 and the intermediate part 312 are integrally provided.

[0078] It can be understood that since two different magnetic poles can be formed at the two ends of a magnet, each magnetic pole corresponds to the middle part of a corresponding winding unit 211, and since the magnetic poles formed in the middle parts of the two winding units 211 in a pair of winding units 211 are arranged differently on the same side, only by arranging one magnet can the enhancement of the magnetic field intensity of the two winding units 211 be achieved, so as to minimize the components as much as possible.

[0079] In an embodiment, at least one magnetic end portion 311 is provided with a magnetic convex portion 313 extending towards the first side of the winding unit 211.

[0080] It can be understood that the magnetic convex portion 313 can guide the magnetic field to concentrate towards the center of the winding unit 211, further increasing the magnetic field intensity of the winding unit 211, which is more conducive to achieving the effect of three-dimensional heating.

[0081] In addition, it is worth mentioning that the size, shape and arrangement of the magnetic convex portion 313 can be set according to actual needs to optimize the distribution of the magnetic field in the heating area.

[0082] In an embodiment, the magnet structure 3 further includes a second magnet portion 32, and the second magnet portion 32 is arranged corresponding to the wire arrangement area of the winding unit 211.

[0083] It can be understood that arranging the second magnet portion 32 with good magnetic conductivity is beneficial to gathering magnetic lines of force, improving the heating power and heating efficiency of the coil disc assembly 100. At the same time, it can play a role in isolating the coil magnetic field for the electronic components arranged on the second side of the winding group 2, so as to ensure the reliability of the electronic components. When the induction cooker with the coil disc assembly 100 is used on a metal tabletop, it can prevent the magnetic field on the second side of the winding group 2 from heating the metal tabletop at the bottom of the induction cooker.

[0084] It is worth mentioning that in the present application, the first magnet portion 31 can also play a role in isolating the coil magnetic field for the electronic components arranged on the second side of the winding group 2, so as to ensure the reliability of the electronic components.

[0085] Specifically, in this embodiment, the material of at least part of the structure of the first magnet portion 31 or the second magnet portion 32 includes one of ferrite, nanocrystalline and silicon steel sheet. The first magnet portion 31 can also be other soft magnetic materials, which can be specifically determined according to actual situations, and the embodiments of this specification do not limit this.

[0086] Please refer to Figure 9, in one embodiment, in the first winding group 21, at least one of the winding units 211 is arranged in a ring shape, which has a first winding ring segment 2111 close to the center of the installation area 11 and a second winding ring segment 2112 close to the periphery of the installation area 11. At least part of the width of the first winding ring segment 2111 is d1, and at least part of the width of the second winding ring segment 2112 is d2, and d1 is greater than d2.

[0087] It can be understood that the "width" in "at least part of the width of the first winding ring segment 2111 is d1, and at least part of the width of the second winding ring segment 2112 is d2, and d1 is greater than d2" refers to the distance between one turn of the coil located at the innermost circle of the ring and one turn of the coil located at the outermost circle of the ring in the multi-turn coil of the winding unit 2112 in the direction outward from the geometric center of the winding unit 211. The winding length of the corresponding area of the second winding ring segment 2112 can be reduced; it can also be that when the winding of the first winding ring segment 2111 and the second winding ring segment 2112 are arranged, and the adjacent winding line segments in each winding ring segment are arranged in parallel, the winding gap of the first winding ring segment 2111 is set to be greater than the winding gap of the second winding ring segment 2112; of course, when the adjacent winding line segments in each winding ring segment are not arranged in parallel, the winding gap will be uneven, but other partial winding line segments can be adjusted adaptively to finally achieve d1 greater than d2.

[0088] In one embodiment, in the first winding group 21, at least one of the winding units 211 is arranged in a ring shape, which has a first winding ring segment 2111 close to the center of the installation area 11 and a second winding ring segment 2112 close to the periphery of the installation area 11. The winding center of the winding unit 211 is located on the side close to the second winding ring segment 2112 of its geometric center.

[0089] "The winding center of the winding unit 211 is located on the side close to the second winding ring segment 2112 of its geometric center" can be achieved by setting the winding unit 211 into shapes such as a quasi-sector shape or a quasi-triangle shape, and adjusting the geometric center by adjusting the shape of the winding unit 211.

[0090] It can be understood that according to Ampere's rule, the magnetic pole formed by the winding unit 211 corresponds to the inner ring area of the ring. When "d1 is greater than d2" or "the winding center is located on the side close to the second winding ring segment 2112 of its geometric center", the magnetic poles of the corresponding winding unit 211 are all formed in the area close to the outer periphery of the bracket 1, so as to achieve the largest possible heating range for the pot wall.

[0091] Of course, the specific manner of implementing the width of the first winding loop segment 2111 to be greater than the width of the second winding loop segment 2112, and implementing the winding center of the winding unit 211 to be located on the side close to the second winding loop segment 2112 of its geometric center is not limited to the above examples. Those skilled in the art may make other changes under the inspiration of the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same as or similar to those of the embodiments of this specification, they should all be covered within the protection scope of the embodiments of this specification.

[0092] In the technical solution provided by the present utility model, in at least one winding unit 211, the magnetic pole formed in the middle thereof is close to the side of the corresponding second winding loop segment 2112, so that the magnetic pole formed in the middle of the winding unit 211 can be closer to the edge side of the bracket 1, and can perform a coupling effect with the position of the corresponding pot wall, increasing the heating range of the pot wall, and improving the uniformity of heating of the bottom and the wall of the pot, so as to solve the problem that the existing induction cooker has a poor heating effect on the pot wall, and it is difficult to increase the heat of the pot wall even if the diameter of the coil disk is increased.

[0093] Furthermore, in order to make the magnetic fields generated by the first winding loop segment 2111 and the second winding loop segment 2112 uniform, so that the pot is heated evenly, in this embodiment, at least part of the winding gap of the first winding loop segment 2111 is greater than the winding gap of the second winding loop segment 2112. With such a setting, only the winding gap of the second winding loop segment 2112 needs to be adjusted and set to be denser, so that the magnetic field generated by the corresponding second winding loop segment 2112 is greater than the magnetic field generated by the corresponding first winding loop segment 2111, but the magnetic field generated by the second winding loop segment 2112 can be distributed more evenly in the magnetic field interval, so that the area acting on the pot wall is heated evenly.

[0094] In one embodiment, the bracket 1 further includes a hollow hole provided corresponding to the winding unit 211.

[0095] It can be understood that the shape of the hollow hole provided on the bracket 1 can be a circular hole, a square hole, a diamond hole, an oval hole, a star hole, or an irregularly shaped hole, which is not particularly limited here and can be set into the required shape. Heat dissipation can be carried out through the hollow hole to keep the heating element and its surrounding components within the optimal working temperature range, ensure the stability and efficiency of the system, prevent damage to the coil disk assembly 100 caused by overheating, and extend the service life of the coil disk assembly 100.

[0096] The present utility model further provides an electromagnetic heating device, which includes the coil disc assembly 100, a panel, and an electric control device of each of the above embodiments. The specific structure of the coil disc assembly 100 refers to the above embodiments. Since this electromagnetic heating device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0097] A plurality of heating zones are provided on the panel, and the plurality of installation zones 11 are arranged corresponding to the plurality of heating zones; wherein, the plurality of heating zones include a side wall heating zone, and the winding group 2 arranged corresponding to the side wall heating zone is set as a first winding group 21.

[0098] With such a setting, the side wall of the cookware is heated by the first winding group 21 installed on the side wall heating zone, and the bottom wall of the cookware is heated for the heating zones where the first winding group 21 is not provided, so that the number and position of the first winding group 21 can be set on the panel according to different requirements, thereby enhancing the richness of the heating means of this electromagnetic heating device to adapt to diverse cooking needs. It can be understood that the electromagnetic heating device can be an induction cooker or an electromagnetic heating stove top, etc. Any electromagnetic heating device having the coil disc assembly 100 belongs to the electromagnetic heating device described in the present utility model.

[0099] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A coil disk assembly, characterized in that, Comprising: A bracket, on which a plurality of mounting areas are formed; And A plurality of winding groups, which are arranged corresponding to the plurality of mounting areas. At least one of the winding groups is set as a first winding group. The first winding group includes a plurality of winding units, and the plurality of winding units are distributed along the periphery of the mounting area. Two adjacent winding units are set with opposite current directions, so that the two adjacent winding units form opposite magnetic poles.

2. The coil disk assembly according to claim 1, wherein, The plurality of mounting areas are arranged in a matrix; or The plurality of mounting areas are arranged along a circumference.

3. The coil disk assembly according to claim 1, characterized in that, The mounting area is square; or The mounting area is circular.

4. The coil disk assembly according to any one of claims 1 to 3, characterized in that The plurality of mounting areas are arranged adjacent to each other; Among the two winding groups on two adjacent mounting areas, at least some of the winding units are shared.

5. The coil disk assembly according to any one of claims 1 to 3, characterized in that, The plurality of mounting areas form a combined mounting area; Among the plurality of winding groups, some of the winding units are distributed along the periphery of the combined mounting area to form a winding hybrid group. In the winding hybrid group, two adjacent winding units are set with opposite current directions, so that the two adjacent winding units form opposite magnetic poles.

6. The coil disk assembly according to claim 5, wherein, The number of winding units in the winding hybrid group is an even number greater than or equal to 4.

7. The coil disc assembly according to claim 1, characterized in that, The number of winding units in the winding group is an even number greater than or equal to 4.

8. The coil disk assembly according to claim 1, wherein, The plurality of winding groups have a first side and a second side. The first side is used to correspond to the appliance to be heated; The coil disk assembly further includes at least one magnet structure arranged corresponding to at least one of the winding groups. The magnet structure is located on the second side of the winding group. The magnet structure includes a first magnet part, and the first magnet part includes: Two magnetic end parts, which are arranged corresponding to the central regions of two adjacent winding units; and An intermediate part, extending from one magnetic end part to the other magnetic end part.

9. The coil disk assembly according to claim 8, wherein, The two magnetic end parts and the intermediate part are integrally provided.

10. The coil disc assembly according to claim 8, wherein, At least one of the magnetic end parts is provided with a magnetic convex part extending towards the first side of the winding unit.

11. The coil disk assembly according to claim 1, wherein, In the first winding group, at least one of the winding units is annular, which has a first winding ring section close to the center of the mounting area and a second winding ring section close to the periphery of the mounting area. At least part of the width of the first winding ring section is d1, and at least part of the width of the second winding ring section is d2, and d1 is greater than d2.

12. The coil disk assembly according to claim 1, characterized in that, In the first winding group, at least one of the winding units is annular, which has a first winding ring section close to the center of the mounting area and a second winding ring section close to the periphery of the mounting area. The winding center of the winding unit is located on the side close to the second winding ring section of its geometric center.

13. An electromagnetic heating device, characterized in that, Comprising: A panel, on which a plurality of heating areas are provided; and The coil disk assembly according to any one of claims 1 to 12, and the plurality of mounting areas are arranged corresponding to the plurality of heating areas; Wherein, the plurality of heating areas include side wall heating areas, and the winding group arranged corresponding to the side wall heating areas is set as the first winding group.

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